Siemens 6MD85, Руководство пользователя

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[fo_ibs_sec_volt_values, 1, en_US]
The infeed current for the 100 % load case is I
act-sec
= 0.733 A.
•
Check the XandR compensation.
The control deviation results from the difference of the measured voltage V
act-prim
and a calculated compen-
sated target voltage V
target-comp
.
[fo_ibs_target_comp, 1, en_US]
The calculated compensated target voltage is calculated from a numerically determined voltage V
load
at the
end of the line:
V
target-comp
= (V
act-prim
- V
load
) + V
target
This numerically determined voltage V
load
at the end of the line is determined form the parameters
X line
,
R
line
, the flowing current I
act-prim
, and the rotor angle φ.
The measured voltage at the voltage controller results as follows from the dependency to the numerically
determined voltage V
load
and the flowing current I
act-prim
:
[fo_ibs_volt_prim_calcul, 1, en_US]
with IΔVI = I
act-prim
⋅ (cosφ ⋅ R + sinφ ⋅ X)
If you insert the target voltage V
target
in the formula instead of V
load
, for the resulting control deviation this
results in D = 0 %.
•
Check whether the operational measured value ΔV has the value 0 via the on-site operation panel or in
DIGSI.
If you set the previous example values and if you set the values
0.10 Ω
for parameter
R line
and
0.15 Ω
for the parameter
X line
, then this results in the following secondary infeed values at a rated load current of
5500 A and a cosφ = 0.707:
With a phase-to-ground connection
[fo_ibs_input_values_LE, 1, en_US]
with I
act-sec
= 734 mA and φ
load
= -45°
With a phase-to-phase connection
[fo_ibs_input_values_LL, 1, en_US]
with I
act-sec
= 734 mA and φ
load
= -75°
Functional Tests
10.10 Commissioning Hints for Voltage Control
1082 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017